Abstract: A motor has an engine block with cylinders arranged to fire in a firing order. A recirculation system delivers combusted mixture from a cylinder which has just fired to at least partly mix with fuel for the next cylinder in the firing order. Injector bodies (401-405) are associated with each cylinder. Each injector body (401-405) has an internal chamber (424) in communication with a fuel inlet port (426) for delivering fuel into the internal chamber, a fuel outlet port (428) for delivering fuel under pressure from the chamber into the associated cylinder and a combusted mixture out-let port (442). The combusted mixture outlet port (442) of each injector body (401-405) is fluidly connected to the combusted mixture inlet port (438) of the next cylinder in the firing order. Alternatively, the recirculation system is arranged substantially internally within the cylinder head.

Abstract: An axial motor (100) driven by opposed pistons/cylinder (101a–105b, 111a–115b) pairs arranged in a circular array about a central axis of the motor (100). The opposed pistons (101a, 101b; 102a, 102b; 103a, 103b; 104a, 104b; 105a, 105b) in each pair are linked by a corresponding connecting rod (106–110), which transfers the thrust from the pistons (101a–105a) to an output shaft via a power transmission apparatus (300) and z crank (114) arrangement. Reciprocating couplings disposed in the transmission apparatus (300) connect the connecting rods (106–110) to the apparatus (300). During operation, the reciprocating couplings oscillate to retain the connecting rods (106–110) substantially aligned with the corresponding piston pair to reduce side thrust on the pistons.

Abstract: The present invention relates to an axial two-stroke motor (100) which includes an integral turbocharger (308). The motor (100) includes more than two cylinders (101-105) arranged in a substantially circular arrangement about a longitudinal axis (305) of an engine block (106). A chamber is disposed in the engine block (106) which forms an exhaust duct (307) and an intake duct (306). The turbocharger (308) is disposed in the chamber so that it is substantially located within the engine block (106). An exhaust turbine (107) of the turbocharger (308) resides substantially in the exhaust duct (307) and a compressor turbine (200) resides substantially in the intake duct (306).